National Review Online has learned that the Koch brothers will postpone their semi-annual meeting, which was originally scheduled to be held next month. It will now be held in April. In an e-mail to friends, Charles Koch says he wants to reflect on the results, and on election data, before he huddles with fellow business leaders.

Here’s what Koch wrote to his inner circle:

Despite November’s disappointing election results, I am convinced that America’s long-term decline is far from a foregone conclusion. Our goal of advancing a free and prosperous America is even more difficult than we envisioned, but it is essential that we continue, rather than abandon, this struggle.

We are working hard to understand the election results, and based on that analysis, to re-examine our vision and the strategies and capabilities required for success. Although some of the needed changes are already evident, it will be several months before the state data necessary to complete this analysis is available.

The Kochs were a major force during the campaign. They donated millions to conservative causes, and Americans for Prosperity, which they founded, was active in many races. David Koch was also a Romney delegate at the GOP convention.